31.04 × 300

0.56×48
47.2× 93

2 answers

Number 1: 9312
Number 2: 26.88
Number 3 : 4389.6
Hope i helped!
estimates:
a) 9000
b)25
c)4500

figure out how I arrived at those. Estimates are ball park math, you do it in your head to no more than two digits.